The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
For the majority...the vast majority of women, it is your lifestyle choices that will make the biggest difference in your risk, which is not the same thing as saying you're to blame because a lot of cancers are sporadic, but that there are things you can do to reduce your personal risk, a lot.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
But really what your research and what a lot of research out there has shown is that there are lifestyle factors that play a if not equally important role, and certainly in combination with these genetic risk factors would probably be very, very important in modifying breast cancer risk.